In the most impressive-looking jazz layouts, you see the leg raised as high as possible, and the back arched far enough to resemble a partial backbend.
Cobra Pose, also known as Bhujangasana, is a basic backbend.
Plow Pose, or Halasana, is an advanced backbend.
First, bring your hands to the small of your back to stabilize your hips in the backbend.
Lift your head and bring your feet close to your head into a deep backbend, allowing the knees to separate but keeping the toes together.